| Groningen to Chitila | 1,062.65 mi (1,710.16 km) |
| Groningen to Cisnadie | 940.70 mi (1,513.91 km) |
| Groningen to Cluj-Napoca | 874.25 mi (1,406.97 km) |
| Groningen to Codlea | 989.81 mi (1,592.94 km) |
| Groningen to Comanesti | 998.02 mi (1,606.16 km) |
| Groningen to Comarnic | 1,016.41 mi (1,635.76 km) |
| Groningen to Constanta | 1,177.52 mi (1,895.03 km) |
| Groningen to Corabia | 1,043.88 mi (1,679.97 km) |
| Groningen to Costesti | 1,014.76 mi (1,633.09 km) |
| Groningen to Covasna | 1,011.55 mi (1,627.93 km) |
| Groningen to Craiova | 992.45 mi (1,597.20 km) |
| Groningen to Cristuru Secuiesc | 949.15 mi (1,527.50 km) |
| Groningen to Cugir | 905.84 mi (1,457.81 km) |
| Groningen to Cumpana | 1,176.96 mi (1,894.14 km) |
| Groningen to Curtea de Arges | 985.89 mi (1,586.64 km) |
